Which Sentence Uses Both a Participial and an Infinitive Phrase?
Ever stared at a grammar test and wondered why one of the answer choices feels… right, but you can’t put your finger on why?
Plus, that’s the moment you’ve bumped into a participial phrase, an infinitive phrase, or—if you’re lucky—both in the same sentence. The short answer is: it’s the sentence that layers a ‑ing or ‑ed clause onto a “to + verb” construction Turns out it matters..
Counterintuitive, but true.
Below we’ll unpack what those phrases actually are, why they matter in everyday writing, how to spot them, and—most importantly—how to pick the right answer when a test asks, “Which sentence uses both a participial and an infinitive phrase?”
What Is a Participial Phrase?
A participial phrase is a group of words built around a present or past participle (‑ing or ‑ed form) that functions like an adjective. It tells you something about a noun or pronoun, often adding vivid detail.
Example
- Running down the hallway, the bell rang loudly.
Here Running down the hallway is the participial phrase; it describes the setting in which the bell rang Not complicated — just consistent..
Key Traits
- Starts with a participle (present ‑ing or past ‑ed).
- May include objects, modifiers, or prepositional phrases.
- Usually set off by commas when it appears at the beginning or middle of a sentence.
What Is an Infinitive Phrase?
An infinitive phrase begins with the word to followed by the base form of a verb. It can act as a noun, adjective, or adverb, depending on where it lands in the sentence.
Example
She hoped to finish the marathon before sunrise.
To finish is the infinitive; the whole phrase to finish the marathon works as the object of hoped Not complicated — just consistent..
Key Traits
- Begins with to + verb.
- May have its own objects or modifiers (to win the gold medal, to be completely honest).
- Can appear anywhere a regular verb could, but it often signals purpose, intention, or expectation.
Why It Matters
You might think, “It’s just grammar—why does it matter?”
In practice, mixing these phrases lets you pack more meaning into a single sentence without sounding clunky. Writers use them to create rhythm, make clear actions, or hint at cause and effect.
If you're miss a participial or infinitive phrase, you risk:
- Ambiguity – the reader may not know which noun the phrase describes.
- Weak style – short, choppy sentences replace the richer, layered prose you could have.
- Test trouble – many standardized exams ask you to identify these structures; the wrong answer can cost points.
How to Spot Both in One Sentence
Finding the combo isn’t rocket science, but it does require a quick mental checklist.
- Look for a ‑ing or ‑ed word that’s not the main verb.
- Check if that word has its own modifiers or objects. If yes, you’ve likely found a participial phrase.
- Scan the rest of the sentence for to + verb.
- Ask yourself: does the to + verb have its own objects or adverbs? If so, that’s your infinitive phrase.
If both checks pass, you’ve got the answer Worth keeping that in mind..
How It Works: Step‑by‑Step Breakdown
Below we walk through a handful of sample sentences, pointing out why each does—or does not—contain both a participial and an infinitive phrase It's one of those things that adds up. Surprisingly effective..
1. “The teacher, smiling warmly, encouraged the students to ask questions.”
Participial phrase: smiling warmly (describes the teacher)
Infinitive phrase: to ask (object of encouraged)
Result: ✅ This sentence uses both It's one of those things that adds up..
2. “She plans to travel abroad after graduating from college.”
Participial phrase: graduating (present participle, no extra words, still a phrase)
Infinitive phrase: to travel (object of plans)
Result: ✅ Both are present, though the participial phrase is short Still holds up..
3. “To win the championship, the team practiced every day.”
Infinitive phrase: To win (acts as an adverb of purpose)
Participial phrase? None. The sentence starts with an infinitive, not a participle Small thing, real impact..
Result: ❌ Only an infinitive phrase.
4. “The cat, covered in mud, stared at the bowl to drink water.”
Participial phrase: covered in mud (describes the cat)
Infinitive phrase: to drink (purpose of staring)
Result: ✅ Both are there Less friction, more output..
5. “He walked to the store hoping to find a discount.”
Participial phrase: hoping (present participle, but lacks its own object—still a phrase because it modifies the whole clause)
Infinitive phrase: to find (object of hoping)
Result: ✅ Both appear, though the participial phrase is a single word with an implied meaning.
Quick Test
Take this sentence and see if you can label the phrases:
“Running late, she decided to call her boss.”
Participial phrase: Running late – describes she
Infinitive phrase: to call – object of decided
If you got both, you’re on the right track No workaround needed..
Common Mistakes / What Most People Get Wrong
Mistake 1: Confusing a Gerund with a Participial Phrase
Gerund: “Running is fun.”
Participial phrase: “Running quickly, she caught the bus.”
Gerunds act as nouns; participial phrases act as adjectives. The test will usually give you a full phrase, not a lone gerund.
Mistake 2: Missing the Infinitive Because It’s Split
Sometimes the infinitive is broken up by an adverb:
“She promised to quickly finish the report.”
Even with an adverb in the middle, it’s still an infinitive phrase. Don’t let the split trick you Surprisingly effective..
Mistake 3: Assuming Any ‑ing Word Is a Participial Phrase
“She enjoys reading.” – that’s a gerund, not a participial phrase.
Only when the ‑ing form modifies a noun (or the whole clause) does it become participial It's one of those things that adds up..
Mistake 4: Overlooking Punctuation
Participial phrases are often set off by commas, but not always. When they appear at the end of a sentence, the comma may disappear:
“He left the room shouting loudly.”
No comma, but the phrase is still participial The details matter here..
Practical Tips / What Actually Works
- Mark the main verb first. Anything that isn’t the main verb but ends in ‑ing or ‑ed is a candidate for a participial phrase.
- Highlight every to + verb. If it has an object (to write the essay), you’ve found an infinitive phrase.
- Ask “What does it describe?” If the ‑ing/‑ed chunk tells you something about a noun, you’ve got a participial phrase.
- Keep an eye on commas. A comma before a ‑ing phrase often signals a participial phrase at the start of a sentence.
- Practice with real sentences. Pull a paragraph from a news article, underline participial phrases in green, infinitives in blue, and see how many sentences contain both.
FAQ
1. Can a sentence have more than one participial phrase and still count?
Yes. As long as there’s at least one participial phrase and at least one infinitive phrase, the sentence meets the criteria Less friction, more output..
2. Do infinitive phrases always start with “to”?
Mostly, but there are bare infinitives (e.g., “She let him go”). Those don’t count as infinitive phrases for this specific question because the “to” is missing.
3. Is a past‑participle phrase like “broken by the storm” a participial phrase?
Absolutely. Past participles work the same way as present ones—broken by the storm modifies a noun Easy to understand, harder to ignore..
4. What if the infinitive phrase is used as an adjective?
That’s still an infinitive phrase. But example: “She has a report to submit by Friday. ” The phrase describes report.
5. How do I remember the difference between gerunds and participles?
Think Gerund = Going to act as a noun.
Think Participle = Provides Properties to a noun (adjective) Most people skip this — try not to. Took long enough..
And there you have it. The next time a test asks, “Which sentence uses both a participial and an infinitive phrase?” you’ll know exactly where to look, how to label each piece, and why it matters for clear, punchy writing Worth keeping that in mind..
Happy parsing!
Mistake 5: Confusing an Infinitive Clause With a Simple Infinitive Phrase
A simple infinitive phrase is just to + verb (plus any objects or modifiers).
An infinitive clause contains its own subject and can act like a full‑blown subordinate clause:
Simple: “I hope to finish early.”
Clause: “She asked him to leave before the meeting started.”
Only the former satisfies the “infinitive phrase” requirement in our test. When you see a subject inside the to‑construction, you’re dealing with a clause, not a phrase, and it should be excluded from the count.
Mistake 6: Ignoring the Position of the Participial Phrase
The placement of a participial phrase can change its function dramatically, and overlooking this can lead to mis‑labeling.
| Position | Example | Why It Matters |
|---|---|---|
| Sentence‑initial (often set off by a comma) | “Running down the hill, she slipped on the ice.” | The phrase modifies the subject she; the comma signals a non‑restrictive modifier. Worth adding: |
| Mid‑sentence, after the noun | “The manuscript, written in haste, contained several errors. ” | The phrase is restrictive or non‑restrictive depending on commas; it still describes manuscript. |
| Sentence‑final (no comma needed) | “He stared at the sky glimmering with stars.” | The phrase directly follows the verb phrase and acts as a complement; the lack of a comma is normal. |
If you treat a final ‑ing clause as a gerund because you’re used to seeing commas with participles, you’ll mis‑classify it. Always ask: What noun is being described? If the answer is “the noun right before the phrase,” you have a participial phrase, regardless of punctuation And it works..
A Mini‑Checklist for the Test‑Taker
Once you encounter a sentence, run through these eight quick steps. If you can tick yes to at least one item in the first three rows and at least one item in the last three rows, you have a winner.
| ✅ | Category | What to Look For |
|---|---|---|
| 1 | Verb Identification | Find the main verb of the clause. Day to day, → Not a phrase |
| 7 | Comma Cue | A leading comma often flags a front‑position participial phrase. |
| 5 | Object/Modifier Check | Does the “to + verb” have an object or adverbial? → Infinitive phrase |
| 6 | Subject‑Inside Test | Is there a subject inside the “to + verb” construction? |
| 3 | Descriptive Test | Does that chunk describe a noun? |
| 2 | ‑ing /‑ed Candidate | Spot any ‑ing or ‑ed chunk that isn’t the main verb. Now, → Participial phrase |
| 4 | To‑Verb Scan | Locate any “to + verb” sequence. |
| 8 | Double‑Check | Verify that the participial phrase and infinitive phrase are not part of the same clause (they must modify different elements). |
If you’re still unsure, rewrite the sentence in your own words. Turning the participial phrase into a relative clause (“the boy who was running”) and the infinitive phrase into a purpose clause (“to win the race”) can make the structures crystal clear.
A Real‑World Example Walk‑Through
“The council, eager to improve public safety, approved the new ordinance after hearing the experts’ recommendations.”
- Main verb: approved – this is the sentence’s core action.
- ‑ing candidate: eager is an adjective, not a participle, so we move on.
- Participial phrase: to improve public safety – wait, that’s a to‑infinitive (see step 4).
- Infinitive phrase: to improve public safety modifies eager (adjective), so it counts as an infinitive phrase.
- Another ‑ing chunk: hearing the experts’ recommendations – ends in ‑ing and has an object (the experts’ recommendations).
- Descriptive test: It tells us when the council approved the ordinance, but it also describes the action of the council, functioning like a participial phrase.
Result: The sentence contains both a participial phrase (hearing the experts’ recommendations) and an infinitive phrase (to improve public safety). It would be a perfect answer on the exam Small thing, real impact..
Common Pitfalls in Grading
When teachers or automated checkers grade these items, they often look for explicit markers:
- Participial phrase → any ‑ing/‑ed clause that directly modifies a noun (often preceded or followed by a comma).
- Infinitive phrase → the literal string “to + verb” with any accompanying objects or adverbs.
If your answer highlights the right strings but doesn’t explain the function, you may lose points. Always pair the identification with a brief justification (“hearing the experts’ recommendations modifies the council; therefore it is a participial phrase”).
Final Thoughts
Mastering the distinction between participial and infinitive phrases is less about memorizing rules and more about developing a structural intuition. By systematically isolating the main verb, hunting for ‑ing/‑ed modifiers, and scanning for “to + verb” constructions, you’ll quickly spot the two required elements in any sentence Simple, but easy to overlook. Nothing fancy..
Remember:
- Participial = adjective‑like (describes a noun).
- Infinitive = “to‑verb” (expresses purpose, intent, or a future‑oriented action).
When you can name the noun each phrase modifies and the verb each infinitive complements, you’ve not only answered the test question—you’ve also sharpened a skill that will make your own writing clearer and more dynamic.
Happy parsing, and may every sentence you encounter reveal its hidden phrases with ease!
Applying the Checklist to New Sentences
To cement the strategy, let’s run through a few fresh examples. Use the same three‑step routine—(1) locate the main verb, (2) flag any ‑ing/‑ed chunks, (3) hunt for “to + verb” strings—and then verify the function of each candidate.
| Sentence | Main Verb | ‑ing/‑ed Candidate | Does it modify a noun? | “to + verb” Candidate | Function of the infinitive |
|---|---|---|---|---|---|
| The mayor, determined to cut traffic fatalities, launched a city‑wide bike‑share program. | recommended | reviewing | modifies analysts (participial) | to increase | complements recommended (infinitive of purpose) |
| The volunteers working late were praised to inspire future participants. | launched | determined | modifies mayor (adjective) → participial phrase | to cut | expresses purpose of determined → infinitive phrase |
| After reviewing the data, the analysts recommended to increase the budget. | were | working | modifies volunteers (participial) | to inspire | expresses intended effect of the praise (infinitive) |
| *She asked to leave early after finishing her report. |
The official docs gloss over this. That's a mistake.
Notice how each sentence supplies both a participial and an infinitive phrase, but the relationship of each to the rest of the clause varies. That variability is why the “function” column matters: a phrase might be present, but if it merely acts as an adverbial clause rather than a modifier of a noun, it does not count as a participial phrase for the purpose of the exam.
Quick‑Reference Cheat Sheet
| Feature | Participial Phrase | Infinitive Phrase |
|---|---|---|
| Form | ‑ing or ‑ed verb form (sometimes with its own object/complement) | “to” + base verb (often with object/complement) |
| Typical Position | Usually set off by commas and placed next to the noun it describes | Can appear after adjectives, nouns, or verbs; often follows the word it explains |
| Function | Adjectival – modifies a noun or pronoun | Nominal/Adverbial – acts as subject, object, complement, or purpose |
| Key Test | Ask “*Which noun does this describe?Think about it: *” | Ask “*What is the purpose, intention, or result? *” |
| Common Pitfalls | Mistaking an adverbial ‑ing clause (“Running fast, she tripped”) for a participial phrase – it modifies the verb, not a noun. | Forgetting that “to be” after a linking verb is a predicate infinitive, not a purpose infinitive. |
Keep this table printed on your study desk. When the exam timer starts, glance at it, run through the three‑step checklist, and you’ll be able to annotate the sentence in under a minute.
Practice Drill: Spot‑the‑Phrase (Timed)
Set a timer for 90 seconds and copy the following paragraph onto a scrap sheet. Then, without looking back at the cheat sheet, underline every participial phrase and circle every infinitive phrase. Finally, write a one‑sentence justification for each underlining/circling.
*The committee, concerned about rising crime rates, decided to allocate additional funds. Gathering community input, they prepared a comprehensive plan to address both short‑term and long‑term safety concerns. *
When the timer stops, compare your work to the answer key below. If any phrase is missing or mis‑identified, note why—was the function unclear, or did you overlook a subtle “to + verb” construction?
Answer Key
- Participial phrases: concerned about rising crime rates (modifies committee), Gathering community input (modifies they).
- Infinitive phrases: to allocate additional funds (object of decided), to address both short‑term and long‑term safety concerns (purpose of plan).
How to Write Your Own Sentences with Both Constructions
If you can generate the patterns yourself, you’ll internalize them more quickly. Follow this template:
- Start with a noun that can be described.
- Add a participial phrase right after the noun (‑ing/‑ed).
- Insert a verb that naturally takes an infinitive complement (e.g., plan, decide, hope, intend).
- Finish with the infinitive phrase expressing purpose or intention.
Template Example:
*The students (noun) eagerly preparing (participial phrase) chose (verb) to submit (infinitive phrase) their projects early (object/complement).
Practice swapping out each element—different nouns, varied participles, alternative infinitives—and you’ll have a personal library of “dual‑phrase” sentences ready for the test Most people skip this — try not to. But it adds up..
Concluding Remarks
The ability to pinpoint both a participial phrase and an infinitive phrase in a single sentence is a micro‑skill that unlocks a larger competence: syntactic awareness. By consistently applying the three‑step checklist—main verb → –ing/–ed candidate → to‑verb candidate—and by always asking yourself what each phrase modifies or expresses, you avoid the common grading traps that trip up many test‑takers Not complicated — just consistent..
Remember:
- Participial phrases are adjective‑like; they cling to a noun.
- Infinitive phrases are “to‑verb” constructions that convey purpose, intention, or a nominal function.
- Function matters more than form; a mere ‑ing clause that modifies a verb does not count as a participial phrase for this purpose.
With the cheat sheet at hand, the practice drill completed, and a handful of self‑crafted examples in your notebook, you’ll approach every exam sentence with confidence. The hidden structures will no longer be hidden—they’ll be visible, labelable, and, most importantly, usable in both analysis and your own writing.
This changes depending on context. Keep that in mind.
Good luck, and happy parsing!
